Parametric study on the performance of active suspension system for variable passenger size and repeated road bumps

Abstract

Efforts are made to investigate the behavior of active suspension system with application of fuzzy logic controller, for better performance against uncertain operating environment. Comprehensive analysis of the complex four degree of freedom system, for derived mathematical model, is performed with the application of Simulink, and a fuzzy logic controller is tested and suggested to improve the performance for different operating aspects. Mathematical model has the adequate flexibility for simulation fidelity to attain the desired degree of accuracy and to meet the objectives and desired outcomes. The imposed effective parameters of analysis are vertical body movements, body acceleration, actuating force in addition to time to regain the stability, which are thoroughly analyzed for great number of specifications. Simulation results indicate the feasibility of modeled fuzzy logic controller tested for randomly profiled road as well as changeable loading conditions.